/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package org.neo4j.cypher.internal.compiler.planner.logical.limit

import org.neo4j.cypher.internal.compiler.planner.logical.LogicalPlanningContext
import org.neo4j.cypher.internal.ir.SinglePlannerQuery
import org.neo4j.cypher.internal.util.Selectivity

final case class LimitSelectivityConfig(forMatch: Selectivity, forHorizon: Selectivity)

object LimitSelectivityConfig {

  val default: LimitSelectivityConfig = LimitSelectivityConfig(Selectivity.ONE, Selectivity.ONE)

  def forAllParts(query: SinglePlannerQuery, context: LogicalPlanningContext): List[LimitSelectivityConfig] = {
    val allParts = LimitSelectivity.forAllParts(query, context)
    allParts.zip(allParts.tail :+ Selectivity.ONE).map { case (forMatch, forHorizon) =>
      LimitSelectivityConfig(forMatch = forMatch, forHorizon = forHorizon)
    }
  }
}
